Try RE: Outbreak if you want some truly horrendous bot play. They always equip the biggest weapon they can find then burn off precious shotgun and grenade rounds on invulnerable enemies or negligibly weak ones like moth larvae. They run around aimlessly, often straight into enemies, commonly refuse your commands, and run straight into environmental hazards like fire and the moving locomotive at the end of level two. I've had them go off all alone at the beginning of the level and then found their body about halfway through, which is doubly bad on the hospital level since that resurrects the powerful stalker type enemy if you've already killed it.